I actually built a Batcave in Minecraft before. It was built into the side of a mountain with a waterfall covering the entrance. It had: -A garage -A kitchen (nicknamed 'Paula Deen's Politically Correct Kitchen' because it was built when she got in trouble last year) -Stripper pole room -a day spa with a hot tub -a racquetball court -a library -an adoption center -deluxe bedroom/bathroom combo -there was more, but I can't remember now